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Conveyor belt furnaces

Conveyor heat treatment furnaces feature adjustable feed speed and controlled heating/cooling zones for continuous hardening and tempering of wire springs. They are used in spring manufacturing, automotive, and tool industries to enhance strength, elasticity, and fatigue resistance.

Total: 7 products
Continuous spring tempering furnace WNJ420
WNJ WNJ

Continuous spring tempering furnace WNJ420

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 2000mm x 400mm x 90mm
Heating power 26kW
Feeding speed 10m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ315
WNJ WNJ

Continuous spring tempering furnace WNJ315

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 1500mm x 300mm x 90mm
Heating power 16kW
Feeding speed 5m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ630
WNJ WNJ

Continuous spring tempering furnace WNJ630

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 3000mm x 600mm x 120mm
Heating power 48kW
Feeding speed 10m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ530
WNJ WNJ

Continuous spring tempering furnace WNJ530

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 3000mm x 500mm x 120mm
Heating power 40kW
Feeding speed 10m/min — 60m/min
Price on Request
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Continuous spring tempering furnace NS540
KDE

Continuous spring tempering furnace NS540

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 4200mm x 500mm x 120mm
Price on Request
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Continuous spring tempering furnace WNJ210
WNJ WNJ

Continuous spring tempering furnace WNJ210

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 1000mm x 200mm x 90mm
Heating power 8kW
Feeding speed 5m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ740
WNJ WNJ

Continuous spring tempering furnace WNJ740

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 4000mm x 700mm x 120mm
Heating power 65kW
Feeding speed 10m/min — 60m/min
Price on Request
More Details

Modern conveyor furnaces deliver high-throughput, consistent thermal processing in a protective atmosphere. Uniform temperature distribution and precise conveyor control prevent oxidation, distortion, and overheating—critical for high-performance springs. Models like WNJ210, WNJ315, WNJ530, WNJ630, WNJ740, and KDE NS540 cover applications from micro-springs to heavy-duty automotive components.

Equipped with digital controls, inert/reducing atmospheres, water quenching, and heat-resistant mesh belts rated for 950°C, these systems ensure long service life and minimal maintenance. Chamber sizes up to 4200×700×120 mm and power up to 65 kW support flexible, high-volume production with excellent repeatability.

KNAVI GROUP supplies furnaces directly from manufacturers. All units include full English documentation, up to 2 years of warranty, operator training, and optional on-site commissioning worldwide.